I personally don't like the numbers on the V4 map but don't object /strongly/. Scripts might be able to take advantage though of zones named something like Body_Skin, Body_Nails, Head_Face, Head_Lips, Head_Brow, etc.

Something I would look out for is the irises, Many eyes look terrible at oblique angles because the are modeled concave to better catch high-lights in frontal poses, this cause the pupil to look terrible from the-quarter views. The iris is actually flat pretty much I think.Has anyone every tried a fancy cornea with an actual refractive shader so it is "solid" clear rather than a transparent shell.